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Influence of Homogenization of Fat on Haircoat of Dairy Calves

Dairy Husbandry Department, Iowa State College, Ames, Iowa

ABSTRACT

Many reports have been made concerning the value of filled milks (skim milk and an unnatural fat) for rearing young calves. ' In studies on infant nutrition the importance of the size of the fat particles is often stressed but little actual evidence has been provided to support this theory. In most calf-feeding trials no attention has been given to the physical form of the fat. In one trial (1) the authors mention a characteristic loss of hair but do not associate it with the physical condition of the fat.

A year ago we started feeding skim milk and soybean oil (here after referred to as ration one) to .calves on the fifth day after birth. Skim milk was warmed and fed with a nipple pail at the rate of 7.5 pounds daily per hundred pounds liveweight. The oil was given by syringe after the milk was fed. We had expected to give an amount of oil equivalent to 3.3 per cent of the skim milk but were forced to reduce the. amount to approxi-mately 2 per cent to avoid nutritional scours.